Drinking cup



FIG. 1 is a top front perspective view of a drinking cup showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing in the figure drawings are included for the purpose of illustration and form no part of the claimed design. 

CLAIM The ornamental design for a drinking cup, as shown. 